python-package: plot leaf index (#457)
python-package: plot leaf index (#457)


fstonezst/LightGBM,microsoft/LightGBM,Laurae2/LightGBM,wxchan/LightGBM,Laurae2/LightGBM,henry0312/LightGBM,wxchan/LightGBM,Allardvm/LightGBM,microsoft/LightGBM,Allardvm/LightGBM,wxchan/LightGBM,olofer/LightGBM,fstonezst/LightGBM,olofer/LightGBM,Laurae2/LightGBM,olofer/LightGBM,microsoft/LightGBM,huanzhang12/LightGBM,fstonezst/LightGBM,Laurae2/LightGBM,wxchan/LightGBM,microsoft/LightGBM,henry0312/LightGBM,Allardvm/LightGBM,fstonezst/LightGBM,Allardvm/LightGBM,henry0312/LightGBM,huanzhang12/LightGBM,henry0312/LightGBM,microsoft/LightGBM,fstonezst/LightGBM,huanzhang12/LightGBM,olofer/LightGBM,huanzhang12/LightGBM,Laurae2/LightGBM,huanzhang12/LightGBM,wxchan/LightGBM,Allardvm/LightGBM,henry0312/LightGBM,olofer/LightGBM